US4525464A - Ceramic body of zirconium dioxide (ZrO2) and method for its preparation - Google Patents
Ceramic body of zirconium dioxide (ZrO2) and method for its preparation Download PDFInfo
- Publication number
- US4525464A US4525464A US06/619,939 US61993984A US4525464A US 4525464 A US4525464 A US 4525464A US 61993984 A US61993984 A US 61993984A US 4525464 A US4525464 A US 4525464A
- Authority
- US
- United States
- Prior art keywords
- oxide
- mole
- ceramic body
- rare earth
- yttrium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 38
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 title claims abstract description 31
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 4
- 238000000034 method Methods 0.000 title claims description 14
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims abstract description 52
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 39
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000000843 powder Substances 0.000 claims abstract description 34
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 28
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000292 calcium oxide Substances 0.000 claims abstract description 28
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims abstract description 20
- 239000010410 layer Substances 0.000 claims abstract description 13
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims abstract description 11
- 239000002344 surface layer Substances 0.000 claims abstract description 8
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003381 stabilizer Substances 0.000 claims abstract description 7
- 230000004048 modification Effects 0.000 claims abstract description 6
- 238000012986 modification Methods 0.000 claims abstract description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract 3
- 150000002910 rare earth metals Chemical class 0.000 claims abstract 3
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 20
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 19
- 239000000725 suspension Substances 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims 1
- 229910001928 zirconium oxide Inorganic materials 0.000 abstract description 9
- 238000006731 degradation reaction Methods 0.000 description 9
- 230000015556 catabolic process Effects 0.000 description 8
- 238000010304 firing Methods 0.000 description 7
- 238000005245 sintering Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000007900 aqueous suspension Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- -1 Yttrium Cerium Titanium Magnesium Calcium Chemical compound 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000003462 bioceramic Substances 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012612 commercial material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 210000004394 hip joint Anatomy 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
- C04B35/486—Fine ceramics
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
- C04B35/486—Fine ceramics
- C04B35/488—Composites
- C04B35/4885—Composites with aluminium oxide
Definitions
- Finely granular zirconium dioxide bodies partially stabilized with yttrium oxide, cerium dioxide and/or other rare earth oxides, and coarsely granular zirconium dioxide bodies partially stabilized with magnesium oxide or calcium oxide pertain to the polycrystalline ceramics which have the highest strengths and resistance to fracture which have been measured up to now. The chief reason for this lies in the tension-induced transformation of the tetragonal lattice modification to the monoclinic room-temperature modification.
- bodies containing yttrium oxide are sintered, hot-pressed or hot-isostatically pressed ("hipped") usually with an yttrium oxide content between 1 and 6 mole-%, either in the tetragonal monophasic field or in the cubic/tetragonal two-phase region, at temperatures between 1400° and 1550° C.
- Their structure then consists of a fine-grained (0.1-1.0 micrometer), tetragonal content (up to 100%) and somewhat coarser, cubic grains (1-10 micrometers) (3.5-6.0 mole-% for high yttrium oxide contents).
- the bodies can contain aluminum oxide in larger amounts.
- Zirconium oxide bodies containing magnesium oxide or calcium oxide are usually sintered in the cubic monophasic region at temperatures between 1690° and 1800° C.; they are therefore more coarse-grained (50 to 70 micrometers).
- TZP Tetragonal Zirconia Polycrystals.
- a bibliography on TZP ceramics is contained in the book, "Science and Technology of Zirconia II", Advances in Ceramics, Vol. 11, 1984) suitable for use in air only for application temperatures up to about 200° C., although such ceramics would offer substantial advantages for use in internal combustion engines.
- This phenomenon would also be disadvantageous for use as a bioceramic (hip joint replacement).
- the invention is based on it--that in sintered specimens which have been heat treated in a milieu rich in yttrium oxide, cerium oxide, magnesium oxide or calcium oxide, e.g., a powder bed of yttrium oxide or magnesium oxide, this degradation process does not occur, or occurs to a lesser degree.
- the invention is therefore based on the problem of reducing or eliminating the above-described loss of strength or surface degradation in ceramic bodies of zirconium dioxide.
- a ceramic body partially stabilized with yttrium oxide and/or cerium oxide and/or one or more rare earth oxides and/or magnesium oxide and possibly containing aluminum oxide which is characterized by being partially stabilized with 0.5 to 5 mole-% of yttrium oxide and/or 2 to 12 mole-% of magnesium oxide and/or calcium oxide and one or more rare earth oxides (e.g., cerium oxide), is 30 to 100% in the tetragonal lattice modification, and has in the surface region a content of yttrium oxide or rare earth oxide and/or magnesium oxide and/or calcium oxide, such that the body is covered by a thin layer that is mostly in the cubic lattice form or in a more highly stabilized tetragonal lattice form.
- a partially stabilized cubic layer can be transformed by tempering (peak aging) at temperatures commonly used in PSZ (1100°-1420° C.) to a PSZ-like layer (i.e., cubic grains having tetragonal segregations).
- thin surface layer in the sense of the invention, is to be understood to mean a layer with a thickness of 0.1 to 200 micrometers, preferably 0.3 to 30 micrometers.
- the body on the basis of zirconium dioxide in accordance with the invention is prepared by firing it in a milieu which is rich in yttrium oxide, cerium oxide, magnesium oxide, calcium oxide and/or rare earth oxides.
- the invention is explained hereinbelow on the basis of the use of yttrium oxide, cerium oxide, magnesium oxide and calcium oxide. It is to be understood, however, that it applies likewise to other rare earth oxides.
- This surface stabilization or annealing is likewise advantageous for conventional zirconia ceramics partially stabilized with magnesium oxide or calcium oxide.
- the ceramic body in accordance with the invention it is possible to set out either from the finished sintered or hipped ceramic or from a green body presolidified at relatively low temperature (e.g., room temperature).
- the ceramic or the green body is now provided with a surface of yttrium oxide, cerium oxide, magnesium oxide, calcium oxide, etc., either in the form of a pressed-on layer of powder or of a slip containing yttrium oxide or magnesium oxide, which can be sprayed on, for example, or applied in the form of a bath for impregnating the surface.
- the bodies thus treated are then fired or sintered at temperatures between 1000° and 1600° C., the length of the treatment being able to be between about 10 minutes and about 100 hours.
- the desired surface stabilization is also achieved to special advantage by firing or sintering the ceramic or green body in a powder bed of yttrium oxide and/or cerium oxide and/or magnesium oxide and/or calcium oxide. Those conditions are preferred in which the desired diffusion is achieved in the shortest possible time, while at the same time achieving a PSZ-like layer.
- the body can be performed either by mixing the oxides, or by wet chemical methods such as sol gel, coprecipitation, spray reaction of aqueous solutions, or from fine, homogeneous powders obtained by fusion and prealloyed with yttrium oxide, cerium oxide, magnesium oxide and/or calcium oxide, and then sintering or hipping, or sintered and then hipped, at temperatures generally between 1350° and 1550° C.
- the finished ceramic is then, as mentioned above, coated with yttrium oxide, cerium oxide, magnesium oxide, calcium oxide, etc., or fired in a corresponding powder bed, until the surface layer enriched with yttrium, cerium, magnesium, or calcium oxide etc. is formed.
- the body When a stabilizer-rich coating is applied to a green body, the body is commonly preformed at a low pressure, say of about 100 MPa, and then pressed again at higher pressure, e.g., 200 to 650 MPa. In most cases, however, the preferred method is the sintering of the pressed body or the firing of a finish-sintered and processed body in a powder bed containing magnesium oxide or yttrium oxide and/or cerium oxide.
- the ceramic bodies of the invention in comparison to specimens prepared under otherwise equal conditions but without the above-described surface treatment, in a treatment for accelerated aging, consisting of four hours of firing at temperatures between 250° C. and 400° C. at steam pressures of 4 to 15 bar, show scarcely any effect.
- the thin surface layer was produced by firing the ready-sintered samples in magnesium oxide, yttrium oxide, cerium oxide or calcium oxide powder, or by treatment with yttrium oxide powder or a zirconium powder containing at least 12 mole-% of yttrium oxide, the surface layer being pressed onto the zirconium oxide compacts stabilized by a small addition (0.5 to 5, preferably 2 to 4 mole-%) of yttrium oxide, or being applied as an aqueous suspension of powder and sintered.
- a small addition 0.5 to 5, preferably 2 to 4 mole-%
- This layer can also contain aluminum oxide for fining the grain. Presumably other rare earth oxides produce a similarly positive effect, as previously mentioned.
- this layer represents primarily a thermally stable protection for TZP ceramics, but also for conventional zirconium oxide partially stabilized with magnesium or calcium (Mg-, Ca-PSZ).
- Example 1 Samples of a powder which was prepared and treated as in Example 1, but contained only 2 mole-% of yttrium oxide by volume, were formed as in Example 1.
- An aqueous suspension of yttria powder was applied to the cylindrical compacts and some of it penetrated into the surface pores; then the coated compacts (type I) were sintered at 1500° C. for 2 hours, and then subjected to the autoclaving described in Example 1, together with identical samples with no coating (type II).
- type I showed only tetragonal and cubic X-ray reflections, but type II showed tetragonal and large monoclinic X-ray reflections which indicates the thermal degradation of the uncoated samples.
- Example 1 Samples from the powder of Example 1 were isostatically pressed at a pressure of 100 MPa, and then sprayed with a suspension of 12 mole-% zirconia powder containing 12 mole-% of yttrium oxide (coating thickness approx. 40 to 200 micrometers), then pressed again isostatically at 630 MPa, and sintered as in Example 1. After the autoclaving treatment (as in Example 1), no thermal degradation of the surface could be detected.
- Example 2 Samples in accordance with Example 2 were coated with the same suspension, but this time with the addition of 20% alumina by volume, and otherwise treated as in Example 1. Here, again, no degradation could be detected after the heat treatment in the autoclave.
- a coprecipitated zirconia powder containing 2.2 mole-% of yttrium oxide was pressed isostatically at 620 MPa; the samples were then sintered in air for 2 hours at 1500° C.
- the bodies thus prepared contained exclusively tetragonal grains of an average size of 0.4 micrometers (material type A).
- a similarly made commercial material with 3 mole-% of yttrium oxide contained approximate 80% of tetragonal grains (approximately 0.4 micrometers) and approximately 20% cubic grains (about 5 micrometers) (material type B).
- Material types A and B were subjected to an autoclave test with a steam pressure of 5 bar at 250° C. for 2 hours, and both types degrade greatly, i.e., show mostly monoclinic reflections at the surface; type A was even completely decomposed.
- Types A and B were then fired each for 2 hours in powder beds of yttrium oxide, cerium oxide, titanium oxide, magnesium oxide and calcium oxide, at different temperatures.
- the heat treatment temperatures and the results of the autoclave test that followed are listed in Table 1. From this it appears that, with the exception of titanium oxide, all the other oxides have a positive effect, especially at higher temperatures.
- a firing in a magnesium oxide powder bed is effective even at relatively low temperatures (1120° C.).
- Types A and B in the form of unsintered compacts, were sintered for 2 h at 1500° C. in powder beds of yttrium oxide, cerium oxide, calcium oxide and magnesium oxide (in air). The above-described autoclave test again showed no surface degradation.
Abstract
Description
TABLE 1 ______________________________________ Sintering in a powder bed, followed by autoclave test for 2 hours, 5 bar steam pressure, 250° C. Powder bed Yttrium Cerium Titanium Magnesium Calcium Sintering oxide oxide oxide oxide oxide tempera- Type of Material ture °C. A B A B A B A B A B ______________________________________ 1120 - - - - - - - - - o 1220 - o o o - - - o + + 1320 o + o + - - + + + + 1420 + + + + - o + + + + ______________________________________
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/619,939 US4525464A (en) | 1984-06-12 | 1984-06-12 | Ceramic body of zirconium dioxide (ZrO2) and method for its preparation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/619,939 US4525464A (en) | 1984-06-12 | 1984-06-12 | Ceramic body of zirconium dioxide (ZrO2) and method for its preparation |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/821,650 Reissue USRE32449E (en) | 1983-06-16 | 1986-01-23 | Ceramic body of zirconium dioxide (ZrO2) and method for its preparation |
Publications (1)
Publication Number | Publication Date |
---|---|
US4525464A true US4525464A (en) | 1985-06-25 |
Family
ID=24483924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/619,939 Ceased US4525464A (en) | 1984-06-12 | 1984-06-12 | Ceramic body of zirconium dioxide (ZrO2) and method for its preparation |
Country Status (1)
Country | Link |
---|---|
US (1) | US4525464A (en) |
Cited By (67)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4626392A (en) * | 1984-03-28 | 1986-12-02 | Ngk Spark Plug Co., Ltd. | Process for producing ceramic body for surgical implantation |
US4640902A (en) * | 1985-05-31 | 1987-02-03 | Rockwell International Corporation | Low thermal conductivity Si3 N4 /ZrO2 composite ceramics |
US4666467A (en) * | 1984-04-06 | 1987-05-19 | Toyo Soda Manufacturing Co., Ltd. | High-strength metal working tool made of a zirconia-type sintered material |
US4690910A (en) * | 1983-03-07 | 1987-09-01 | Toyo Soda Manufacturing Co., Ltd. | Sintered product of zirconia and method of producing the same |
US4690911A (en) * | 1983-10-20 | 1987-09-01 | Hitachi Chemical Co., Ltd. | Zirconia ceramics and process for producing the same |
US4703024A (en) * | 1986-02-26 | 1987-10-27 | Aronov Victor A | Methods for improving mechanical properties of partially stabilized zirconia and the resulting product |
WO1987006574A1 (en) * | 1986-04-29 | 1987-11-05 | Ceramatec, Inc. | Toughening of ceramic bodies |
US4722661A (en) * | 1985-10-09 | 1988-02-02 | Ngk Insulators, Ltd. | Magnetic-drive centrifugal pump |
US4742030A (en) * | 1985-09-06 | 1988-05-03 | Toray Industries, Inc. | Sintered zirconia material and method for manufacturing the material |
US4748138A (en) * | 1982-01-09 | 1988-05-31 | Ngk Spark Plug Co., Ltd. | Highly toughened, sintered mass of zirconia |
EP0279102A2 (en) * | 1986-11-24 | 1988-08-24 | Corning Glass Works | Transformation toughened zirconia-titania-yttria ceramic alloys |
US4767727A (en) * | 1985-05-24 | 1988-08-30 | Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V. | Fibre-strengthened ceramic formed bodies |
US4772576A (en) * | 1985-09-06 | 1988-09-20 | Nippon Soda Co., Ltd. | High density alumina zirconia ceramics and a process for production thereof |
US4784818A (en) * | 1985-06-14 | 1988-11-15 | Agency Of Industrial Science & Technology | Method for molding superplastic ceramic |
US4820666A (en) * | 1985-03-22 | 1989-04-11 | Noritake Co., Limited | Zirconia base ceramics |
US4820665A (en) * | 1986-12-16 | 1989-04-11 | Ngk Insulators, Ltd. | Ceramic sintered bodies and a process for manufacturing the same |
US4820667A (en) * | 1986-08-18 | 1989-04-11 | Ngk Insulators, Ltd. | High strength zirconia ceramic |
US4853353A (en) * | 1988-01-25 | 1989-08-01 | Allied-Signal Inc. | Method for preventing low-temperature degradation of tetragonal zirconia containing materials |
US4866014A (en) * | 1987-04-13 | 1989-09-12 | Ford Motor Company | Method of making a stress resistant, partially stabilized zirconia ceramic |
US4880757A (en) * | 1986-01-24 | 1989-11-14 | The Dow Chemical Company | Chemical preparation of zirconium-aluminum-magnesium oxide composites |
US4885266A (en) * | 1982-06-01 | 1989-12-05 | Commonwealth Scientific And Industrial Research Organization | Zirconia ceramic materials and method for making same |
US4900492A (en) * | 1984-04-27 | 1990-02-13 | Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V. | High-strength and temperature-stable formed bodies of zirconium dioxide |
US4977114A (en) * | 1986-11-28 | 1990-12-11 | Sumitomo Chemical Company, Limited | Zirconia ceramics and method for producing same |
US4996117A (en) * | 1985-12-12 | 1991-02-26 | Bbc Aktiengesellschaft, Brown, Boveri & Cie | High temperature protective coating |
US5004711A (en) * | 1987-12-09 | 1991-04-02 | Harshaw/Filtrol Partnership | Process of producing colloidal zirconia sols and powders using an ion exchange resin |
US5090944A (en) * | 1985-10-16 | 1992-02-25 | Nkg Insulators, Ltd. | Magnetic-drive device for rotary machinery |
DE4217605A1 (en) * | 1991-05-29 | 1992-12-03 | Ngk Insulators Ltd | Partially stabilised zirconium di:oxide - contains magnesium oxide in grain boundary, used as heat resistant material |
US5180696A (en) * | 1987-06-11 | 1993-01-19 | Hitachi Metals, Ltd. | High-toughness zro2 sintered body and method of producing same |
US5290332A (en) * | 1992-03-05 | 1994-03-01 | Eastman Kodak Company | Ceramic articles and methods for preparing ceramic articles and for sintering |
US5296301A (en) * | 1990-10-08 | 1994-03-22 | Matsushita Electric Works, Ltd. | Sintered ceramic-metal composite product and method of fabricating the same |
US5334462A (en) * | 1989-09-08 | 1994-08-02 | United Technologies Corporation | Ceramic material and insulating coating made thereof |
EP0631995A1 (en) | 1993-06-24 | 1995-01-04 | Dentsply GmbH | Dental prosthesis |
EP0649008A2 (en) * | 1993-10-14 | 1995-04-19 | Ngk Insulators, Ltd. | Zirconia diaphragm structure, method of producing the same, and piezoelectric/electrostrictive film element having the zirconia diaphragm structure |
US5439580A (en) * | 1993-11-05 | 1995-08-08 | The Ohio State University | Solid-state gas sensor for carbon monoxide and hydrogen |
US5472795A (en) * | 1994-06-27 | 1995-12-05 | Board Of Regents Of The University Of The University Of Wisconsin System, On Behalf Of The University Of Wisconsin-Milwaukee | Multilayer nanolaminates containing polycrystalline zirconia |
WO1996009263A1 (en) * | 1994-09-23 | 1996-03-28 | Alsimag Technical Ceramics, Inc. | Improved stabilized zirconia |
US5545461A (en) * | 1994-02-14 | 1996-08-13 | Ngk Insulators, Ltd. | Ceramic diaphragm structure having convex diaphragm portion and method of producing the same |
US5556816A (en) * | 1994-03-15 | 1996-09-17 | Kim; Dae-Joon | Methods for preparation of tetragonal zirconia polycrystal composites |
US5641440A (en) * | 1995-07-26 | 1997-06-24 | The United States Of America As Represented By The Secretary Of The Navy | Sintering aids for producing BaO.Al2 O3.2SiO2 and SrO.Al.sub. O3.2SiO2 ceramic materials |
US5674794A (en) * | 1992-12-22 | 1997-10-07 | Eastman Kodak Company | Zirconia articles having tetragonal cores and monoclinic cases and preparation and sintering methods |
US5681784A (en) * | 1992-07-03 | 1997-10-28 | Robert Bosch Gmbh | Thermal shock resistant ceramic |
US5683481A (en) * | 1996-08-20 | 1997-11-04 | Eastman Kodak Company | Method of making core shell structured articles based on alumina ceramics having spinel surfaces |
US5683825A (en) * | 1996-01-02 | 1997-11-04 | General Electric Company | Thermal barrier coating resistant to erosion and impact by particulate matter |
US5723393A (en) * | 1997-03-06 | 1998-03-03 | Eastman Kodak Company | Zirconia ceramic article |
US5726110A (en) * | 1997-03-06 | 1998-03-10 | Eastman Kodak Company | Zirconia-alumina ceramic article |
US5827572A (en) * | 1995-10-17 | 1998-10-27 | Korea Institute Of Science & Technology | Process for manufacture of a zirconia material resistant to low temperature degradation |
US5932507A (en) * | 1998-02-19 | 1999-08-03 | Van Weeren; Remco | Method for preventing low-temperature degradation of tetragonal zirconia containing materials |
US6001470A (en) * | 1996-11-27 | 1999-12-14 | Toshiba Ceramics Co., Ltd, | Calcining tool material and method of fabricating thereof |
US6049158A (en) * | 1994-02-14 | 2000-04-11 | Ngk Insulators, Ltd. | Piezoelectric/electrostrictive film element having convex diaphragm portions and method of producing the same |
US6069103A (en) * | 1996-07-11 | 2000-05-30 | Saint-Gobain/Norton Industrial Ceramics Corporation | LTD resistant, high strength zirconia ceramic |
US6087285A (en) * | 1997-10-13 | 2000-07-11 | Tosoh Corporation | Zirconia sintered body, process for production thereof, and application thereof |
US6247371B1 (en) * | 1997-04-04 | 2001-06-19 | Ngk Insulators, Ltd. | Three-axis sensor |
KR20020004130A (en) * | 2000-07-03 | 2002-01-16 | 이종국 | Preparation Method of Thermal Stable Ceria_stabilized Zirconia |
WO2003104162A1 (en) * | 2002-04-27 | 2003-12-18 | Emerson Electric (China) Holdings Co., Ltd. | A shape memory ceramic and a producing method thereof |
US20050136188A1 (en) * | 2003-12-18 | 2005-06-23 | Chris Chang | Yttria-coated ceramic components of semiconductor material processing apparatuses and methods of manufacturing the components |
US20050266270A1 (en) * | 2004-05-25 | 2005-12-01 | Lasater Brian J | Material and method to prevent low temperature degradation of zirconia in biomedical implants |
US20080258358A1 (en) * | 2005-05-04 | 2008-10-23 | Evonik Degussa Gmbh | Slip Containing Zirconium Dioxide and Aluminum Oxide and Shaped Body Obtainable Therefrom |
US20090036291A1 (en) * | 2007-07-31 | 2009-02-05 | Zircoa, Inc. | Grinding beads and method of producing the same |
US20100035747A1 (en) * | 2008-07-30 | 2010-02-11 | Saint-Gobain Ceramics & Plastics, Inc. | Partially stabilized zirconia materials |
WO2012023601A1 (en) * | 2010-08-20 | 2012-02-23 | 株式会社ノリタケカンパニーリミテド | Sintered zirconia, and sintering composition and calcined object therefor |
JP2013517860A (en) * | 2010-03-31 | 2013-05-20 | ストラウマン ホールディング アーゲー | Body made from ceramic material |
US8877664B2 (en) | 2009-08-21 | 2014-11-04 | Noritake Co., Limited | Zirconia sintered body, and mixture, pre-sintered compact and pre-sintered calcined body for sintering zirconia sintered body |
US20150299049A1 (en) * | 2012-12-24 | 2015-10-22 | Straumann Holding Ag | Body made of a ceramic material |
US20150315085A1 (en) * | 2012-12-24 | 2015-11-05 | Straumann Holding Ag | Body made of a ceramic material |
EP2443077B1 (en) | 2009-06-19 | 2017-08-23 | Nobel Biocare Services AG | Dental application coating |
CN114804843A (en) * | 2022-05-10 | 2022-07-29 | 佛山市东鹏陶瓷有限公司 | High-strength ultrathin rock plate and preparation method thereof |
CN116477943A (en) * | 2022-01-17 | 2023-07-25 | 中国人民解放军国防科技大学 | Novel tantalate complex-phase ceramic and preparation method thereof |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4067745A (en) * | 1974-10-24 | 1978-01-10 | Commonwealth Scientific And Industrial Research Organization | Ceramic materials |
US4298385A (en) * | 1976-11-03 | 1981-11-03 | Max-Planck-Gesellschaft Zur Forderung Wissenschaften E.V. | High-strength ceramic bodies |
US4322249A (en) * | 1977-11-21 | 1982-03-30 | Max Planck Gesellschaft | Process for the preparation of dispersion ceramics |
US4419311A (en) * | 1975-11-05 | 1983-12-06 | Nils Claussen | Production of high-strength ceramic bodies of alumina and unstabilized zirconia with controlled microfissures |
US4421861A (en) * | 1979-05-22 | 1983-12-20 | Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V. | High-strength and temperature-change resistant ceramic formed body, especially of mullite, its production and use |
-
1984
- 1984-06-12 US US06/619,939 patent/US4525464A/en not_active Ceased
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4067745A (en) * | 1974-10-24 | 1978-01-10 | Commonwealth Scientific And Industrial Research Organization | Ceramic materials |
US4419311A (en) * | 1975-11-05 | 1983-12-06 | Nils Claussen | Production of high-strength ceramic bodies of alumina and unstabilized zirconia with controlled microfissures |
US4298385A (en) * | 1976-11-03 | 1981-11-03 | Max-Planck-Gesellschaft Zur Forderung Wissenschaften E.V. | High-strength ceramic bodies |
US4322249A (en) * | 1977-11-21 | 1982-03-30 | Max Planck Gesellschaft | Process for the preparation of dispersion ceramics |
US4421861A (en) * | 1979-05-22 | 1983-12-20 | Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V. | High-strength and temperature-change resistant ceramic formed body, especially of mullite, its production and use |
Cited By (97)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4748138A (en) * | 1982-01-09 | 1988-05-31 | Ngk Spark Plug Co., Ltd. | Highly toughened, sintered mass of zirconia |
US4885266A (en) * | 1982-06-01 | 1989-12-05 | Commonwealth Scientific And Industrial Research Organization | Zirconia ceramic materials and method for making same |
US4690910A (en) * | 1983-03-07 | 1987-09-01 | Toyo Soda Manufacturing Co., Ltd. | Sintered product of zirconia and method of producing the same |
US4690911A (en) * | 1983-10-20 | 1987-09-01 | Hitachi Chemical Co., Ltd. | Zirconia ceramics and process for producing the same |
US4626392A (en) * | 1984-03-28 | 1986-12-02 | Ngk Spark Plug Co., Ltd. | Process for producing ceramic body for surgical implantation |
US4666467A (en) * | 1984-04-06 | 1987-05-19 | Toyo Soda Manufacturing Co., Ltd. | High-strength metal working tool made of a zirconia-type sintered material |
US4900492A (en) * | 1984-04-27 | 1990-02-13 | Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V. | High-strength and temperature-stable formed bodies of zirconium dioxide |
US4820666A (en) * | 1985-03-22 | 1989-04-11 | Noritake Co., Limited | Zirconia base ceramics |
US4767727A (en) * | 1985-05-24 | 1988-08-30 | Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V. | Fibre-strengthened ceramic formed bodies |
US4640902A (en) * | 1985-05-31 | 1987-02-03 | Rockwell International Corporation | Low thermal conductivity Si3 N4 /ZrO2 composite ceramics |
US4784818A (en) * | 1985-06-14 | 1988-11-15 | Agency Of Industrial Science & Technology | Method for molding superplastic ceramic |
US4742030A (en) * | 1985-09-06 | 1988-05-03 | Toray Industries, Inc. | Sintered zirconia material and method for manufacturing the material |
US4772576A (en) * | 1985-09-06 | 1988-09-20 | Nippon Soda Co., Ltd. | High density alumina zirconia ceramics and a process for production thereof |
US4722661A (en) * | 1985-10-09 | 1988-02-02 | Ngk Insulators, Ltd. | Magnetic-drive centrifugal pump |
US5090944A (en) * | 1985-10-16 | 1992-02-25 | Nkg Insulators, Ltd. | Magnetic-drive device for rotary machinery |
US4996117A (en) * | 1985-12-12 | 1991-02-26 | Bbc Aktiengesellschaft, Brown, Boveri & Cie | High temperature protective coating |
US4880757A (en) * | 1986-01-24 | 1989-11-14 | The Dow Chemical Company | Chemical preparation of zirconium-aluminum-magnesium oxide composites |
US4703024A (en) * | 1986-02-26 | 1987-10-27 | Aronov Victor A | Methods for improving mechanical properties of partially stabilized zirconia and the resulting product |
WO1987006574A1 (en) * | 1986-04-29 | 1987-11-05 | Ceramatec, Inc. | Toughening of ceramic bodies |
US4820667A (en) * | 1986-08-18 | 1989-04-11 | Ngk Insulators, Ltd. | High strength zirconia ceramic |
EP0279102A2 (en) * | 1986-11-24 | 1988-08-24 | Corning Glass Works | Transformation toughened zirconia-titania-yttria ceramic alloys |
EP0279102A3 (en) * | 1986-11-24 | 1988-10-12 | Corning Glass Works | Transformation toughened zirconia titania-rare earth oxide ceramic, zirconia titania-yttria ceramic, zirconia titania-ceria ceramic, and mixtures thereof |
US4977114A (en) * | 1986-11-28 | 1990-12-11 | Sumitomo Chemical Company, Limited | Zirconia ceramics and method for producing same |
US4820665A (en) * | 1986-12-16 | 1989-04-11 | Ngk Insulators, Ltd. | Ceramic sintered bodies and a process for manufacturing the same |
US5017531A (en) * | 1986-12-16 | 1991-05-21 | Ngk Insulators, Ltd. | Silicon nitride ceramic sintered bodies |
US4866014A (en) * | 1987-04-13 | 1989-09-12 | Ford Motor Company | Method of making a stress resistant, partially stabilized zirconia ceramic |
US5180696A (en) * | 1987-06-11 | 1993-01-19 | Hitachi Metals, Ltd. | High-toughness zro2 sintered body and method of producing same |
US5004711A (en) * | 1987-12-09 | 1991-04-02 | Harshaw/Filtrol Partnership | Process of producing colloidal zirconia sols and powders using an ion exchange resin |
US4853353A (en) * | 1988-01-25 | 1989-08-01 | Allied-Signal Inc. | Method for preventing low-temperature degradation of tetragonal zirconia containing materials |
US5334462A (en) * | 1989-09-08 | 1994-08-02 | United Technologies Corporation | Ceramic material and insulating coating made thereof |
US5296301A (en) * | 1990-10-08 | 1994-03-22 | Matsushita Electric Works, Ltd. | Sintered ceramic-metal composite product and method of fabricating the same |
US5389590A (en) * | 1990-10-08 | 1995-02-14 | Matsushita Electric Works, Ltd. | Method of fabricating a sintered ceramic composite |
DE4217605A1 (en) * | 1991-05-29 | 1992-12-03 | Ngk Insulators Ltd | Partially stabilised zirconium di:oxide - contains magnesium oxide in grain boundary, used as heat resistant material |
US5290332A (en) * | 1992-03-05 | 1994-03-01 | Eastman Kodak Company | Ceramic articles and methods for preparing ceramic articles and for sintering |
US5358913A (en) * | 1992-03-05 | 1994-10-25 | Eastman Kodak Company | Zirconia ceramic articles having a tetragonal core and cubic casing |
US5681784A (en) * | 1992-07-03 | 1997-10-28 | Robert Bosch Gmbh | Thermal shock resistant ceramic |
US5677072A (en) * | 1992-12-22 | 1997-10-14 | Eastman Kodak Company | Zirconia articles having tetragonal cores and monoclinic cases and preparation and sintering methods |
US5674794A (en) * | 1992-12-22 | 1997-10-07 | Eastman Kodak Company | Zirconia articles having tetragonal cores and monoclinic cases and preparation and sintering methods |
US5824123A (en) * | 1992-12-22 | 1998-10-20 | Eastman Kodak Company | Zirconia articles having tetragonal cores and monoclinic cases and preparation and sintering methods |
US5849068A (en) * | 1993-06-24 | 1998-12-15 | Dentsply G.M.B.H. | Dental prosthesis |
US6126732A (en) * | 1993-06-24 | 2000-10-03 | Dentsply Detrey Gmbh | Dental prosthesis |
EP0631995A1 (en) | 1993-06-24 | 1995-01-04 | Dentsply GmbH | Dental prosthesis |
EP0649008A2 (en) * | 1993-10-14 | 1995-04-19 | Ngk Insulators, Ltd. | Zirconia diaphragm structure, method of producing the same, and piezoelectric/electrostrictive film element having the zirconia diaphragm structure |
US5517076A (en) * | 1993-10-14 | 1996-05-14 | Ngk Insulators, Ltd. | Zirconia diaphragm structure and piezoelectric/electrostrictive element incorporating same |
EP0649008A3 (en) * | 1993-10-14 | 1995-10-18 | Ngk Insulators Ltd | Zirconia diaphragm structure, method of producing the same, and piezoelectric/electrostrictive film element having the zirconia diaphragm structure. |
US5733670A (en) * | 1993-10-14 | 1998-03-31 | Ngk Insulators, Ltd. | Zirconia diaphragm structure, method of producing the same, and piezoelectric/electrostrictive film element having the zirconia diaphragm structure |
US5439580A (en) * | 1993-11-05 | 1995-08-08 | The Ohio State University | Solid-state gas sensor for carbon monoxide and hydrogen |
US6049158A (en) * | 1994-02-14 | 2000-04-11 | Ngk Insulators, Ltd. | Piezoelectric/electrostrictive film element having convex diaphragm portions and method of producing the same |
US5545461A (en) * | 1994-02-14 | 1996-08-13 | Ngk Insulators, Ltd. | Ceramic diaphragm structure having convex diaphragm portion and method of producing the same |
US6108880A (en) * | 1994-02-14 | 2000-08-29 | Ngk Insulators, Ltd. | Method of producing a piezoelectric/electrostrictive film element having convex diaphragm portions |
US5556816A (en) * | 1994-03-15 | 1996-09-17 | Kim; Dae-Joon | Methods for preparation of tetragonal zirconia polycrystal composites |
US5472795A (en) * | 1994-06-27 | 1995-12-05 | Board Of Regents Of The University Of The University Of Wisconsin System, On Behalf Of The University Of Wisconsin-Milwaukee | Multilayer nanolaminates containing polycrystalline zirconia |
WO1996009263A1 (en) * | 1994-09-23 | 1996-03-28 | Alsimag Technical Ceramics, Inc. | Improved stabilized zirconia |
US5658837A (en) * | 1994-09-23 | 1997-08-19 | Aisimag Technical Ceramics, Inc. | Stabilized zirconia |
US5641440A (en) * | 1995-07-26 | 1997-06-24 | The United States Of America As Represented By The Secretary Of The Navy | Sintering aids for producing BaO.Al2 O3.2SiO2 and SrO.Al.sub. O3.2SiO2 ceramic materials |
US5827572A (en) * | 1995-10-17 | 1998-10-27 | Korea Institute Of Science & Technology | Process for manufacture of a zirconia material resistant to low temperature degradation |
US5683825A (en) * | 1996-01-02 | 1997-11-04 | General Electric Company | Thermal barrier coating resistant to erosion and impact by particulate matter |
US6069103A (en) * | 1996-07-11 | 2000-05-30 | Saint-Gobain/Norton Industrial Ceramics Corporation | LTD resistant, high strength zirconia ceramic |
US5683481A (en) * | 1996-08-20 | 1997-11-04 | Eastman Kodak Company | Method of making core shell structured articles based on alumina ceramics having spinel surfaces |
US6001470A (en) * | 1996-11-27 | 1999-12-14 | Toshiba Ceramics Co., Ltd, | Calcining tool material and method of fabricating thereof |
US5723393A (en) * | 1997-03-06 | 1998-03-03 | Eastman Kodak Company | Zirconia ceramic article |
US5726110A (en) * | 1997-03-06 | 1998-03-10 | Eastman Kodak Company | Zirconia-alumina ceramic article |
US6247371B1 (en) * | 1997-04-04 | 2001-06-19 | Ngk Insulators, Ltd. | Three-axis sensor |
US6087285A (en) * | 1997-10-13 | 2000-07-11 | Tosoh Corporation | Zirconia sintered body, process for production thereof, and application thereof |
WO1999042420A1 (en) * | 1998-02-19 | 1999-08-26 | Alliedsignal Inc. | Method for preventing low-temperature degradation of tetragonal zirconia containing materials |
US5932507A (en) * | 1998-02-19 | 1999-08-03 | Van Weeren; Remco | Method for preventing low-temperature degradation of tetragonal zirconia containing materials |
KR20020004130A (en) * | 2000-07-03 | 2002-01-16 | 이종국 | Preparation Method of Thermal Stable Ceria_stabilized Zirconia |
WO2003104162A1 (en) * | 2002-04-27 | 2003-12-18 | Emerson Electric (China) Holdings Co., Ltd. | A shape memory ceramic and a producing method thereof |
CN1906026B (en) * | 2003-12-18 | 2011-08-03 | 兰姆研究公司 | Yttria-coated ceramic components of semiconductor material processing apparatuses and methods of manufacturing the components |
WO2005062758A2 (en) * | 2003-12-18 | 2005-07-14 | Lam Research Corporation | Yttria-coated ceramic components of semiconductor material processing apparatuses and methods of manufacturing the components |
WO2005062758A3 (en) * | 2003-12-18 | 2006-01-12 | Lam Res Corp | Yttria-coated ceramic components of semiconductor material processing apparatuses and methods of manufacturing the components |
US7220497B2 (en) * | 2003-12-18 | 2007-05-22 | Lam Research Corporation | Yttria-coated ceramic components of semiconductor material processing apparatuses and methods of manufacturing the components |
US20050136188A1 (en) * | 2003-12-18 | 2005-06-23 | Chris Chang | Yttria-coated ceramic components of semiconductor material processing apparatuses and methods of manufacturing the components |
TWI381415B (en) * | 2003-12-18 | 2013-01-01 | Lam Res Corp | Yttria-coated ceramic components of semiconductor material processing apparatuses and methods of manufacturing the components |
US8293335B2 (en) | 2003-12-18 | 2012-10-23 | Lam Research Corporation | Yttria-coated ceramic components of semiconductor material processing apparatuses and methods of manufacturing the components |
US20050266270A1 (en) * | 2004-05-25 | 2005-12-01 | Lasater Brian J | Material and method to prevent low temperature degradation of zirconia in biomedical implants |
US7037603B2 (en) * | 2004-05-25 | 2006-05-02 | Alfred E. Mann Foundation For Scientific Research | Material and method to prevent low temperature degradation of zirconia in biomedical implants |
US20060118035A1 (en) * | 2004-05-25 | 2006-06-08 | Alfred E. Mann Foundation For Scientific Research | Method to prevent low temperature degradation of zirconia |
US20080258358A1 (en) * | 2005-05-04 | 2008-10-23 | Evonik Degussa Gmbh | Slip Containing Zirconium Dioxide and Aluminum Oxide and Shaped Body Obtainable Therefrom |
US7700034B2 (en) * | 2005-05-04 | 2010-04-20 | Evonik Degussa Gmbh | Slip containing zirconium dioxide and aluminum oxide and shaped body obtainable therefrom |
US8074472B2 (en) | 2007-07-31 | 2011-12-13 | Zircoa Inc. | Grinding beads and method of producing the same |
US20090036291A1 (en) * | 2007-07-31 | 2009-02-05 | Zircoa, Inc. | Grinding beads and method of producing the same |
US20100035747A1 (en) * | 2008-07-30 | 2010-02-11 | Saint-Gobain Ceramics & Plastics, Inc. | Partially stabilized zirconia materials |
EP2443077B1 (en) | 2009-06-19 | 2017-08-23 | Nobel Biocare Services AG | Dental application coating |
EP2443077B2 (en) † | 2009-06-19 | 2021-01-27 | Nobel Biocare Services AG | Dental application coating |
US8877664B2 (en) | 2009-08-21 | 2014-11-04 | Noritake Co., Limited | Zirconia sintered body, and mixture, pre-sintered compact and pre-sintered calcined body for sintering zirconia sintered body |
JP2013517860A (en) * | 2010-03-31 | 2013-05-20 | ストラウマン ホールディング アーゲー | Body made from ceramic material |
JP2015199666A (en) * | 2010-03-31 | 2015-11-12 | ストラウマン ホールディング アーゲー | Body made of ceramic material |
WO2012023601A1 (en) * | 2010-08-20 | 2012-02-23 | 株式会社ノリタケカンパニーリミテド | Sintered zirconia, and sintering composition and calcined object therefor |
US8987157B2 (en) | 2010-08-20 | 2015-03-24 | Noritake Co., Limited | Sintered zirconia, and composition for sintering and calcined body therefor |
US20150299049A1 (en) * | 2012-12-24 | 2015-10-22 | Straumann Holding Ag | Body made of a ceramic material |
US10752553B2 (en) * | 2012-12-24 | 2020-08-25 | Straumann Holding Ag | Body made of a ceramic material |
US10759706B2 (en) * | 2012-12-24 | 2020-09-01 | Straumann Holding Ag | Body made of a ceramic material |
US20150315085A1 (en) * | 2012-12-24 | 2015-11-05 | Straumann Holding Ag | Body made of a ceramic material |
CN116477943A (en) * | 2022-01-17 | 2023-07-25 | 中国人民解放军国防科技大学 | Novel tantalate complex-phase ceramic and preparation method thereof |
CN116477943B (en) * | 2022-01-17 | 2024-04-12 | 中国人民解放军国防科技大学 | Tantalate complex-phase ceramic and preparation method thereof |
CN114804843A (en) * | 2022-05-10 | 2022-07-29 | 佛山市东鹏陶瓷有限公司 | High-strength ultrathin rock plate and preparation method thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4525464A (en) | Ceramic body of zirconium dioxide (ZrO2) and method for its preparation | |
USRE32449E (en) | Ceramic body of zirconium dioxide (ZrO2) and method for its preparation | |
CA1333913C (en) | Stabilized zirconia | |
SATO et al. | Crystalline phase change in yttria‐partially‐stabilized zirconia by low‐temperature annealing | |
EP0300716B1 (en) | Alumina-zirconia ceramic | |
US4690911A (en) | Zirconia ceramics and process for producing the same | |
JPH042537B2 (en) | ||
US5183610A (en) | Alumina-zirconia ceramic | |
JPH0475188B2 (en) | ||
JPS61101462A (en) | Zirconia ceramic | |
US5658837A (en) | Stabilized zirconia | |
US4866014A (en) | Method of making a stress resistant, partially stabilized zirconia ceramic | |
Claussen et al. | Ceramic Body of Zirconium Dioxide (ZrO 2) and Method for Its Preparation | |
KR0165869B1 (en) | Low temperature degradation zirconia materials and their process | |
JPS6060980A (en) | Ceramic formed body comprising zirconium dioxide (zro2) and manufacture | |
Terao et al. | Characteristics of ZrO2‐Dispersed Si3N4 without Additives Fabricated by Hot Isostatic Pressing | |
JPS6265976A (en) | Silicon iodide sintered body and its production | |
US5183801A (en) | Stabilized bismuth oxide | |
US5932507A (en) | Method for preventing low-temperature degradation of tetragonal zirconia containing materials | |
JP2003040673A (en) | High strength zirconia sintered compact | |
JP2004352572A (en) | Alumina ceramics and method for producing the same | |
Ban et al. | Effect of sintering condition, sandblasting and heat treatment on biaxial flexure strength of zirconia | |
JPH0380153A (en) | Manufacture of ziroconia-based ceramic | |
Basu et al. | Ageing of zirconia-toughened alumina ceramics under different hydrothermal conditions | |
CA2128480A1 (en) | Water-resistant ceramics articles |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSC Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:CLAUSSEN, NILS;RUHL, MANFRED;PETZOW, GUNTER;REEL/FRAME:004314/0409 Effective date: 19840521 Owner name: MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSC Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CLAUSSEN, NILS;RUHL, MANFRED;PETZOW, GUNTER;REEL/FRAME:004314/0409 Effective date: 19840521 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: AMERICAN COMMERCIAL INCORPORATED, 1 GILBERT PLACE, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:LASLO, LARRY R.;REEL/FRAME:004549/0486 Effective date: 19841220 Owner name: AMERICAN COMMERCIAL INCORPORATED, NEW JERSEY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LASLO, LARRY R.;REEL/FRAME:004549/0486 Effective date: 19841220 |
|
RF | Reissue application filed |
Effective date: 19860123 |